Mining-machine



3 Sheets-Sheet 1 B. YOOH.

MINING MACHINE.

(No Model.)

No. 263,645. Patented Aug. 29, 1882.

(No Model.)

I 3 Sheets-Sheet 2. B. YOOH.

MINING MACHINE.

2 00 w "a n f f 9 zw r W d er I m a w I. w .3 1 F V W O M e N ,0 Z O m a 4 9 Z i H (No Model.) a SheetF-Sheet 3.

B.YOOH.

MINING MACHINE.

No. 263,645. Patented Aug. 29, 1882.

N. PETERi Plmto-Lifihuumpllur. Wnihington. D. c.

UNITED STATES PATENT Free.

MINING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 263,645, dated August 29, 1882,

Application filed December 12, 1881. (No model.)

To all whom it may concern Be it known that I, BENHARD YooH, of Belleville, in the county of St. Clair and State of Illinois, have invented certain new and useful Improvements in Mining- Machines, of which the following is a specification, reference being bad to the accompanying drawings, forming part of the same.

My invention relates to that class of miningmachines in which the pick piston-rod of an engine driven by compressed air or steam. p

My invention consists in the described manner of supporting the cylinder on a truckframe so as to allow universal motion to the cylinder; also, in a device for driving the valveengine by partly-exhausted air taken from the cylinder or by steam taken from the same;

also, a novel construction of piston; also, a novel construction of slide-valve, with other details of construction, as set forth hereinafter.

The machine is adapted for making horizontal, vertical, and oblique cuts.

In the drawings, Figure 1 is a side view of the machine. In broken lines are shown wheels and axles that are inserted beneath it to allow its removal from place to place on the ordinary rail-track of the mine, (the track or base rails upon which the car stands when at work being on a wider gage.) Fig. 2 is a transverse section at 2 2, Fig. 1, showing the cylinder-supporting frame in elevation. Fig. 3 is a detail horizontal section at 3 3, Fig. 2, showing also part of one of the supportingrails in top view. Fig. 4 is a transverse section of the engine-cylinder at 44, Fig. 12.

Fig. 5 is a longitudinal section through the engine and steam or air chest and one of the duplicatestuftlng-boxes at 5 5, Fig. 6. Fig. 6 is a horizontal section through the air or steamchest at 6 6, Fig. 5. Fig. 7 is an enlarged end view of the engine and air or steam chest. Fig. 8 is an enlarged transverse section of the engine and air or steam chest at 8 8, Fig. 5. Fig. 9 is an enlarged detail section of the piston at 5 5, Fig. (i. Fig. 10 is atop view of the carriage-frame. Fig. 11 isa side View of the cylinder and part of a side rail supporting same. -Fig.12 is a top view of the cylinder with parts of the two side rails. Figs. 13 and 15 are side views of the picks and automatic hoe or scraper for drawing out the chi ppings.

is attached to the" Y the cords are coiled on engage the floor of the room, and thus prevent the retrograde movement of the base-track A B. The frame has also hinged dogs a, for driving into the floor of the room for a like purpose.

a are staples for the engagement of ropes D by means of hooks G or otherwise. The oflice of the ropes D is to prevent the back ward movement of the carriage on the trackframe and to furnish means for the advancement of the carriage. For this latter purpose a Windlass, E, turned by a hand-wheel, 'F, or by other means. The windlass has a ratchet-wheel, c, engaged by a. pawl, e, to prevent the Windlass from turning backward. The carriage has side bars, Gr, suitably connected by transverse bars and supported upon wheels H upon the rails 13.

I are uprights upon the side bars, and made in onepiece or firmly attached to the same, and braced to the bars by braces J. The inner sides of the uprights have T-grooves 17, which receive the flanged edges of an arch, K, I-formed in section at the sides. The arch K is vertically adjustable in the uprights I, and is secured in position by set-screws 7a or by other means.

L is an annular frame or hoop, having brackets M working upon the sides of the arch K. The frame L is supported by means of chains N, engaging on hooks of ajack-rod, 0,.extending up through the crown of arch K, and having a hand-nut, P, screwing upon it and bearing upon the arch. By turning the hand-nut the frame L is raised or lowered. The frame L has at bottom and top sockets in which turn the trunnions q of the annular frame or hoop Q, thus allowing the hoop Q to oscillate freely in a vertical plane. The annular frame Q has sockets receiving trunnions 1' upon the sides of the side rails, B, upon which the engine-cylinder S is supported. These rails extend through brackets T on the sides of the cylinder, the brackets being constructed to slide on the rails to enable the balancing of the cylinder on the frame Q. The brackets are held in position by set-screws t. The relative positions of the trunnions qr and their sockets may be reversed without affecting the resultnamely, to give capacity for universal motion to the cylinder.

U is the handle, adjustable on the side rails by means of sleeves U, and secured by setscrews u.

V is the chest receiving compressed air or steam through the opening a or otherwise;

The slide-valves are shown at W W. The valve W is shown of the common D form, working over induction-port s and exhaustport 8. an end extension, to, with a port, to, extending through it. The valve W is not attached to the valve-rod X, but is actuated by a cover, W that is attached to the valve-rod, and which has a certain amount of lost motion on the valve. The cover W has a portyw which in a certain position of the cover is brought in conjunction with the port to, so that the com-' pressed air or steam (as the case may be) at such time enters the port 10 from the chest, but at other times the cover acts as a cut-off, the lower face of the cover fitting the top of the valve W. The position of the valves, as shown in Fig. 5, is such that the compressed air is entering the cylinder at the ports to w s of valve W and exhausting at valve W.

' rectly through the port 8.

When the valves commence to move toward the cylinder-head S the ports to ta are first closed, cutting off communication between the air-chest and the front end of the cylinder; next the compressed air will be admitted at valve W, and exhaust will take place at valve W. The early cutting off of the compressed air at valve W will moderate the force of the back movement of the drills or picks, while it willbe seen that the full head of compressed air or steam is upon the piston-head at the commencement of its stroke, so as to draw the picks forcibly backward and overcome any hold they may have in the object being drilled.

The piston 12 has two cavities, b, into which the compressed air or steam enters through the steam -ports 8, and from which it escapes through ports 0 in the ends of the piston. Each port 0 has a spring check-valve, 0, opening outwardly from the chambers b, and closing to prevent air from the cylinder entering the cavity, so that the piston may cushion on the compressed air or steam at the ends of the strokes. Thus the compressed air or steam will first enter the cavity 1) while it is in connection with the port 8, and when the packing ring or collar at that end of the piston has passed said port the piston will be driven by pressure from the air entering the cylinder di- The packing rings or collars are marked 61. They are three in number-namely, one at each end of the piston outside the cavities b and one between said cavities. The piston does not fit the cylinder closely between the packing-rings. The piston On the other slide-valve, W, there is contains a cylinder, b with a piston, 1) play ing therein, and having connection with a scraper, If, by means of a piston-rod and connecting-rod, Z). This is substantially like my scraper shown and described in my application filed 24th of September, 1881, except as to the construction of the cylinder and piston and the cross-head. The head of the cylinder is made with a bore for the passage of the pistonrod, larger in diameter than the said rod, to allow exhaustion from that end of the cylinder, (or, more properly, cylindrical cavity.) Thus it will be seen that the piston-rod does not fill said bore, except that in immediate contact with the piston is an enlargement, I), which is of the equal diameter with the bore, and which enters and closes the same in advance oi'the piston, so that the air or steam is closely confined and forms a cushion, preventing the piston from striking against the head or end of its cylinder. There is a substantially similar arrangement at the other end of the piston,

.where a plug, I)", fits the exhaust-port b and closes the same to form an air or steam cushion, as the case may.

In the matter of the cross-head h, I make it of the form shown, the drills being set transversely between the points of attachment of the piston-rods. crum h is in line with the picks. I use two piston-rods,f, (as in my former application,) working in aframe, g. The guide-tubes of the frame are attached to an open bracket, g, leaving abundant space for the manipulation of the stuffing-boxes. The piston-rods carry at their ends the cross-head IL, to whichthe picks j are secured. (See Figs. 13,14, and 15.)

The valve-rod X of the pick-engine has a yoke, in which works a crank, Y, upon a transverse shaft, Y. The shaft Y carries a fiy-wheel, Y and an eccentric, Y. The eccentric is connected by an eccentric-rod, Y, with the slide-valve Z of the engine, by which the slide-valves W and W W of the pick-engine are moved.

I is the valve-chest of the valve-operating engine, said chest receiving compressed air from the valve-chest V'of the main or pick engine or from the cylinder S. a

on is a reservoir in communication with the valve-chest l, and also with the interior of the cylinder S at m.

n is a check-valve, (see Fig. 7,) which opens freely to allow the compressed air or steam to enter the reservoir m from the cylinder when the pressure in the cylinder is greater than in the reservoir, but prevents any return current.

0 is a pipe communicating directly from the valve-chest V to the reservoir m, and having a stop-cock, 0, by which it may be closed. This direct communication may be used when the machine is first started or in cases where the full pressure of air or steam is required to work the valve-driving en gine; but where less power is needed economy will be had in supplying the valve-chest l from the partly-ex- In this case the scraper-fulthe passage m in the first half of the for any edge, between the points.

.vide means for movin hausted contents of the cylinder S. The passage m being at or about at half-stroke, and not being open to-the pressure side of the piston, the force of the air is not lessened by stroke. It is found advantageous to relieve the piston from a part or all of the air-pressure in' the lastihalf of the stroke forward, so as to prevent the reactive force upon the picks, when they strike the object, being transmitted to the rear end of the cylinder S, and thus driving or tending to drive the engine backward from its work, so that it is quite useful to provide a means for exhaust when the piston reaches half-stroke, whether the escaping air or steam can be used for any purpose or not. For this reason I propose to provide the cylinder S with an exhaust-opening, m, at or near half-stroke, even in the absence of the reservoir in and connection with the valve-chest l. The picks in Figs. 13, 14, and 15 are shown of the shape known as diamond-point in cold-chisels, which shape I'believe to be new tool used for drilling. This shape may be described as having one salient corner and the end beveled, as shown in the drawings. In Figs. 16, 17, and 18 the picks are shown with two points, j, with a. transverse cutting To return to the carriage, the side bars, G, havejaws or axle bearings G at bottom to receive the axle H" of the wheels H (See broken lines in Fig. 1.) The object is to prog the machine from place B being usually set at a much the ordinary track ina mine,

g arranged to run on the ordito place, the rails Wider gage than (the wheels bein nary rail-track.)

O, hand-nut P, arch and drill-cylinder adjustably connected to the gimbal-frame, as set having brackets T, and forth.

arch K, side bars, able securing device, as set forth.

extensible handle U, and to slide on said rails, as set forth.

f, working in guide-frame bridge 9, standing out from the cylinder-head, as set forth.

1 claim as my invention- 1. In a mining-machine, adrill-cylinder supforth. 2. The combination of hoop L, inner hoop,

Q, trunnions qr, and drill-cylinder, adjustable in said hoops, as set forth.

3. The combination of chains N N, jackrod K, the gimbal-frame L Q,

forth. 4. The combination of sliding cylinder S, side rails, R R, as set 5. The comhination'of vertically-adjustable G, uprights l I, and a suit- 6. The combination of supporting'rails R,

cylinder S, adapted 7. The scraper-operating piston I)", having projection or plug 11 and enlargement or collar b, closing the central exhaust-ports, substantially as and for the purpose set forth. 8. The two picks forming a compound picktool, as shown, in combination with the crosshead, as set forth.

9. The combination of duplicate piston-rods y, and bracket or BENHARD YOGH.

Wi tuesses SAML. KNIGHT, GEo. H. KNIGHT. 

